Christopher A. Eiswerth

CHRIS EISWERTH is an experienced litigator, representing clients from the filing of a complaint through discovery and critical motions onto appeal. His practice focuses on complex commercial disputes and government-facing litigation, as well as pre-litigation counseling.

In 2025, Chris re-joined Sidley from the Federal Programs Branch of the U.S. Department of Justice’s Civil Division where, as a trial attorney, he served as the federal government’s lead district-court counsel in numerous high-profile cases challenging unconstitutional state laws and defending federal statutes, regulations, and policies. He briefed and argued complex issues of constitutional and administrative law, including jurisdiction, sovereign immunity, and preemption; conducted evidentiary hearings; and advised federal agencies on potential regulatory actions. Chris received the Attorney General’s Distinguished Service Award—the Department’s second-highest performance award—for defending the FDA’s approval of mifepristone and received special commendations from the Civil Division for outstanding service as part of the Department’s post-Dobbs Reproductive Rights Team and Concertina Wire Litigation Team.

Chris began his career as a law clerk for Judge Karen Nelson Moore of the U.S. Court of Appeals for the Sixth Circuit. He received his law degree from Harvard Law School and his B.A. in English from Dickinson College.